Refillable toner cartridge

Details Refillable toner cartridge Refillable toner cartridge

1995-11-07

1997-01-14

Grimley, Arthur T.

Electrophotography

Image formation

Development

222DIG1, 414411, 399106, G03G 1506

Patent

active

055945350

ABSTRACT:
An apparatus for refilling an electrophotographic imaging system. A refill pack is constructed around a frame. A collapsible bag, which is permanently attached to the top of the frame, along with a removable seal, which is attached to the bottom of the frame, defines an internal volume that contains the developer particles. The refill pack attaches to a receiving area on the cartridge. A new cartridge includes a flexible cover attached over an opening in the receiving area. Once the refill pack is attached to the receiving area, the removable seal is removed. As the removable seal is removed, a cutting edge on the removable seal cuts the flexible cover, opening the cartridge. Removal of the removable seal also releases the developer particles from the internal volume, allowing them to enter the cartridge thereby refilling the cartridge. Additional refill packs may be added over the top of a spent refill pack. However, the receiving area of the cartridge allows a maximum number of refill packs.

REFERENCES:
patent: 4816877 (1989-03-01), Keen
patent: 5185616 (1993-02-01), Wilcke
patent: 5392963 (1995-02-01), Kelly et al.

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